Togliatti曲线[Togliatti Surface] - 达人(其实～我是卧底，来自外星)

2005/04/03 | Togliatti曲线[Togliatti Surface]
类别(∑〖数学〗) | 评论(0) | 阅读(26) | 发表于 13:14: Togliatti (1940, 1949) showed that quintic surfaces having 31 ordinary double points exist, although he did not explicitly derive equations for such surfaces. Beauville (1978) subsequently proved that 31 double points are the maximum possible, and quintic surfaces having 31 ordinary double points are therefore sometimes called Togliatti surfaces. van Straten (1993) subsequently constructed a three-dimensional family of solutions and in 1994, Barth derived the example known as the dervish.; 0